JPS60208501A - Prefabricated pavement construction method applying high frequency - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a prefabricated paving method for paving by applying high frequency heating using preformed paving materials such as concrete blocks and asphalt blocks, that is, prefabricated paving materials.

Conventionally, when paving prefabricated paving materials on a base such as Lancrete, most of the time, hard-mixed cement mortar was spread with a trowel to a thickness of about 10 to 15 mm, and the prefabricated paving materials were placed on top of this with a trowel. The method used is to lay the tiles close together without land, and then fill the joints with cement mortar. However, when the base is flexible pavement such as asphalt pavement, or when the base is a steel deck (for example, road bridges, pedestrian bridges, etc.), the base flexes due to loads and is subject to large vibrations due to loads and shocks.
The rigid cement mortar layer is prone to cracking and peeling. In addition, steel deck plates have the problem of corrosion of the copper plates due to contact with mountain water. Also, since it has drawbacks such as shrinkage cracks, it is necessary to bond it with a flexible viscoelastic material such as a rubber mixture. ': π22:
However, there is still an appropriate construction method.The present invention responds to such demands, and unlike conventional construction methods, bituminous materials,
A binder such as a thermoplastic mixture, and aggregates and fillers (e.g., granules such as metals and metal compounds, fibers, aggregates, etc. ) is used as a bonding layer to bond the Breno Paving material to the base, and the bonding layer is heated and softened by high frequency heating, and the Prebu paving material is used as the base. □, New 1. This provides a prefabricated pavement construction method.

Further, the present invention provides a layer made of a mixture of a binder such as bituminous material or a thermoplastic mixture, and aggregate and filler, at least a part of which is made of a material that generates heat by high frequency □. Then, after laying the prefabricated paving material on the top surface, the mixture layer is heated and softened by applying Takaoka 3 waves from above, and the prefabricated paving material is placed on the base through the mixture. A pre-paving method that utilizes high-frequency heating, which is characterized by the combination of It also has a □ layer at the bottom made of a mixture of a binding material such as a thermoplastic mixture and an aggregate made of a material that is at least partially influenced by high frequency waves. Prefabricated paving material is laid on a base and high frequency is applied from above - the mixture layer is heated and softened, and the prefabricated paving material is bonded to the base. Bu paving method. This is related to.

Prefabricated paving materials as used in the present invention refer to 7'' shaped paving strips used for pavements and pavements. These include block blocks, tiles, brick tiles, artificial stone slabs, synthetic stone slabs, water block blocks, etc.

A foundation is a construction base on which prefabricated paving materials are laid and paved. For example, when paving prefabricated paving materials on the slab of a road bridge or pedestrian bridge, the slab becomes the base. .

When paving using the prefabricated pavement method on top of an asphalt pavement, the asphalt pavement becomes the base. In addition, when paving prefabricated paving materials on a concrete pavement, the concrete pavement becomes the base.

A binder such as a bituminous material or a thermoplastic mixture as used in the present invention (hereinafter simply referred to as a binder such as a bituminous material), and an aggregate or filler at least a part of which is made of a material that generates heat by high frequency are used. The mixture is a mixture consisting of a binder such as bituminous material, aggregate, and filler, and in which at least a part of the aggregate and filler is made of a material that generates heat by high frequency waves.

The bituminous material and thermoplastic mixture in the binder such as bituminous material used in the present invention are as follows.

The bituminous material is a bituminous material consisting of one or more selected from petroleum asphalt, natural asphalt, tar, pinch, etc., such as straight asphalt, blown asphalt, semi-blown asphalt, canopy blown asphalt, and propane membrane asphalt. Modified bituminous products in which one or more types of rubber, synthetic polymers, resins, oils and fats, mineral oils, process oils, plasticizers, etc. are appropriately added to these bituminous products, and these bituminous products or modified bitumen. Examples include emulsifying a substance in water, adding latex such as rubber or synthetic polymer, and adding a solvent to the above bituminous material or modified bituminous material. For the various bitumen products mentioned above,
Filled bituminous materials with additional fillers can also be used.

Thermoplastic admixtures include binders used in colored heated mixtures for forming colored pavements, binders used in hot-melt road marking materials, and the like. In addition, thermoplastic polymers (e.g., polyacrylate, ethylene/acrylate copolymer, ethylene/vinyl acetate copolymer, polyethylene, styrene/isoprene block copolymer, styrene/butadiene block copolymer, etc.), Thermoplastic natural resins, synthetic resins and their derivatives (for example, petroleum resins, ester gums, hardened rosins, terpene resins, synthetic terpene resins, maleic acid resins, alkyrad resins, etc.), mineral oils, process oils, plasticizers, There are also those mixed with oils and fats as appropriate. For mixing, a method of heating and melting mixing, a method of mixing by roll kneading, a method of heating and mixing with a kneader, etc. can be adopted. In addition, there is also a method in which rubber powder is added to the above substance and heated and mixed to partially dissolve it.

The thermoplastic blend can also be used in the form of an emulsion or in the form of a solvent-added cutback.

Aggregate made of material that generates heat due to high frequency as used in the present invention,
Filler (hereinafter referred to as exothermic aggregate, filler) is
Materials that generate heat when placed in a high frequency (iR) field or electric field include the following:

Grid used for grid blasting of powders of metals, alloys, metal compounds, metal oxides, etc. for powder metallurgy, thermal spray metals, catalysts, etc., and the surface of painted metal plates.

(particles of metals, alloys, etc.), iron sand, iron sand, granular iron, granular aluminum, ceramic powder, iron oxide powder, ferrite powder, red mud by-product during alumina production, metal cutting waste, metal wire cut materials, steel fibers, stainless steel fibers,
Other metal fibers, stainless steel and steel thin plates, foils, other metal thin plates and foils cut into thin strips, graphite, carbon fibers, emery, nickel slag, copper slag, steelmaking slag, and other metal production sub-products. These include fine aggregate made from mine slag, coarse aggregate, heavy aggregate using ores such as hematite, magnetite, magnetite, barite, etc., and fillers.

When these metal bones and fillers are placed in a high-frequency magnetic field or electric field, eddy currents flow intensively through them.
The resistance heat generation generates Zeel heat and generates heat. The exothermic action varies in strength and weakness depending on the interplay, so it should be selected and used appropriately.

The mixture (hereinafter simply referred to as a mixture) using a binder phase such as bituminous material and at least a part of the aggregate using exothermic aggregate, filler, or filler used in the present invention is as follows. It's something like this.

A variety of heated mixtures and room-temperature mixtures of a binder such as bituminous material, aggregate, and filler can be used, ranging from those with a relatively large amount of binder to those with a relatively small amount. The amount of pyrogenic aggregates and fillers in these mixtures is
It is approximately 2 to 50% by weight, usually 2 to 30% by weight. Although the amount may be more than this, it seems that 30% by weight or less is practically sufficient from the heat generation effect caused by high frequency application. If it is less than 2% by weight, it is not a good idea to take advantage of the heat generation effect caused by high frequency application because the heat generation is gradual.

Next, 2.3 examples of these mixtures will be specifically explained.

A mixture of binder, aggregate, filler, etc., heated or kneaded with crystals, and formed into a sorted shape, plate shape, etc. These are fibers, etc. It can also be reinforced.The amount of bonding material is relatively large, so it can be reinforced.
Binding materials with a high softening point and high viscosity are often used.

A bonded mixture of bituminous material, etc., aggregate, and filler, the binder phase has a high softening point and is relatively large in amount, and is spread by pouring a heated mixture, bitumen, etc.) Binding material and aggregate, 74 woo. Added mixtures A, those that have a large amount of bone phase and filler like heated bituminous mixtures for paving, are manufactured in the same way, and are constructed in the same way, those that are paved by pouring like booth asphalt, and those that are paved by pouring like asphalt concrete. There are those that are laid down and paved.

It is a room temperature mixture of a binder phase such as bituminous particles that is liquid at room temperature, bone material, and filler, and it is a mixture that has a large amount of binder phase such as paint, and a room temperature bituminous mixture for paving that has a large amount of aggregate and filler. There are some with less material.

A layer made of a mixture of these materials is provided on the base, and a pre-nov pavement layer is laid on top of it. The thickness of the mixture layer ranges from 2 to 50 mm, usually from 3 to 30 mm. It is of a certain degree.

The 'lJr compound layer can be provided on the substrate by the following method.

After applying a cook coat or prime coat of 7 bituminous resin made of 71-day emulsion etc. on the base, or on top of that, or
Spread the mixture directly on the base to the specified thickness. If necessary, roll a roller over this to compact it and straighten it. Or,
Lay out something shaped like a sheet or plate. If necessary, fix the sheet or plate shape by nailing or gluing it in place. When using a sheet or plate with a pressure-sensitive adhesive on the surface and a release sheet attached, peel off the release sheet.
Stretch it on the base. In this way, a layer of mixture is provided on the base, on which the plenoplast paving material is deposited. In this case, a tank coat of bituminous emulsion or the like may be provided on the mixture layer and the prefabricated paving material may be laid down.

If a prefabricated paving material having a mixture layer at the bottom of the prefabricated paving material is used, it is possible to omit providing the mixture layer on the base in advance.

Such prefabricated paving materials can be manufactured by bonding a layer of mixture to the back side of prefabricated paving materials such as concrete blocks in a factory, or by bonding a layer of mixture to the back side of prefabricated paving materials such as concrete blocks at the paving site prior to paving. A layer of mixture cut to the dimensions of , etc. may be applied. In this case, if the surface of the mixture layer has pressure-sensitive adhesive properties, construction will be easier.

For pre-knob paving materials such as mata and asphalt blocks, which are formed from a mixture with a binder as a binder phase,
When molding, a mixture containing exothermic aggregate and filler may be placed in the lower part of the mold.

Furthermore, in a molded product made of a hot-melt binder mixture such as an asphalt block, the aggregate of the molded product mixture, a part of the filler is a heat-generating aggregate, and the filler is used to form a heat-generating bone throughout the molded product. Prefabricated paving materials mixed with materials and fillers can also be used.

The high-frequency heating method used in the present invention includes an induction heating method and a dielectric heating method, but it is also possible to use both in combination.

High frequency induction heating uses a high frequency of 500 KH2 or less, and high frequency dielectric heating uses a high frequency of IMHz or more.

The principle of induction heating is that when a high-frequency current generated by a high-frequency power source (generator) is passed through an induction coil, a high-frequency magnetic field is generated in the axial direction of the induction coil. When the magnetic flux changes, it induces an electromotive force that causes current to flow in a direction that prevents the change, and current is induced in aggregates and fillers such as metals placed in a high-frequency magnetic field, and Joule heat is generated by the resistance heat generation. There is no need to burn fuel, it can be heated efficiently without using fire, it is safe, it is clean, does not generate unpleasant odors, smoke, etc., and is economical. Of course, an important feature of the heating is that the mixture layer containing aggregates such as metals and fillers generates heat from within to raise the temperature.

The frequency of the high frequency of induction heating used in the present invention is 1-50.
KHz (kilohertz), usually around 5 to 20 K11z is used. This frequency company can use a higher frequency, a lower frequency, or two or more different frequencies. It is also possible to use lower frequencies together. The frequency can be selected appropriately depending on the thickness of the mixture layer, the quality and quantity of aggregates such as metals and fillers in the mixture layer, the quality and thickness of the prefabricated pavement, the heating range of the mixture layer, etc. can.

The induction heating device includes a high-frequency generator, one induction coil (induction coil), and a current transformer, and is mounted on one or more carts during construction. The inductor is
One or more units are combined to form a unit so that the magnetic field can be concentrated on a certain area of the road surface. By arranging multiple units, it is possible to induction heat the road surface while gently moving the trolley. It's Nishide. Furthermore, the position of the dielectric can be adjusted to move up or down, if necessary.

Application of high frequency can be performed continuously or intermittently. Also, different frequencies can be applied alternately or simultaneously.

The heating rate varies depending on the material of the broken egg heating element, but asphalt concrete containing iron powder, steel fibers, etc.
At 0 cnn, it takes less than 2 minutes to raise the temperature from room temperature to 140-160° C. by induction heating with an output of 20 KW and 120 KHz.

In the prefabricated pavement construction method using high frequency heating of the present invention, an example using high frequency induction heating will be explained with figures.

FIG. 1 is a side view showing one embodiment of the plano-paving method using high-frequency induction heating. In the figure, (1)
is the base, (2) is the exothermic aggregate, Ficy-1 (3) is the mixture layer containing exothermic aggregate and filler, (4) is the burr trapping material, and (5) is the induction layer. coil (inductor), and (6) is a high frequency generator.

When a high-frequency current is passed through the inductor (5), magnetic lines of force, that is, a high-frequency magnetic field, are generated, and the magnetic force and flux of the glands (magnetic flux) are mixed in countless numbers in the mixture layer (3). wood,
Passes through filler (2). Then, a vortex I-d flow is generated in the exothermic filler and filler (2), generating Joule heat, which heats the mixture (3) internally to a temperature of 70%. 11. The degree rises by 1, and it melts or melts and exhibits binding strength, making the prefabricated paving material (4) the base (
1) can be combined and integrated.

Dielectric heating applies a high frequency electric field to the bituminous mixture layer by oscillating a high frequency of I Ml-1z or higher. In dielectric heating, heat is generated by frictional heat between molecules caused by the rotation of dipoles inside a dielectric.

FIG. 2 is a side view showing an example of a prefabricated pavement construction method applying high-frequency dielectric heating, in which a high-frequency oscillator (7)
A high frequency voltage is applied to the high frequency electrode (8) i8). Flat plates, grids, etc. are used as high-frequency electrodes.
It goes without saying that the mixture layer (3) should be selected as appropriate depending on the form and arrangement of the mixture layer (3), and that the mixture layer (3) should be included in the high-frequency electric field.
It is a good idea to set up

When a high frequency electric field acts on the mixture layer (3), the mixture layer (3)
3) Numerous exothermic aggregates and fillers contained therein generate heat, and the mixture layer (3) is heated from within. Mixture layer (
If there is water in 3), radio waves will be absorbed, allowing rapid heating due to the dielectric effect. Thus, the prefabricated paving material (4) can be quickly applied to the mixture layer (3) on the base (1).
It can be coupled via.

Next, the prefabricated pavement construction method of the present invention will be explained.

First, prepare the foundation. Then, jJW blue emulsion or the like is sprinkled on the top surface to form a prime coat or tack coat. For road bridge decks, an adhesive prime coat is usually applied by spraying or painting. If you want to install a waterproof layer, put it on top of the adhesive prime coat.

The above-mentioned prime coat, tack coat, etc. may be omitted depending on the case.

Next, a layer of a mixture containing heat-generating aggregate and fishy is provided on the base. The mixture layer is usually 1 m or force 11
It is formed by flattening a mixture containing exothermic bone phase and filler to the required thickness in a heated state and then rolling it, but it can also be formed by laying the mixture formed into sorted shapes, plate shapes, etc. You can also do it. Next, prefabricated paving material is laid on top of this.

Alternatively, a prefabricated paving material with a mixture layer containing exothermic bone phase and filler in the F section is laid on the base.

Next, high-frequency heating is applied to the soil of the prefabricated paving material. High-frequency heating can use both induction heating and dielectric heating, and it is also possible to use both in combination.High-frequency heating allows the mixture layer interposed between the prefabricated paving material and the base to heat the heating core more quickly than the inside. The prefabricated paving material is melted or softened and exhibits bonding strength to firmly connect the prefabricated paving material and the base.1. It is possible to construct an lli system.

However, as one essential feature of the prefabricated pavement construction method of the present invention, it is also possible to obtain a pavement similar to ordinary asphalt concrete pavement using prefabricated asphalt concrete plates.

1. Prefabricated asphalt concrete - 1 - The mixture that makes up the board and asphalt concrete is mixed with exothermic aggregates and fillers such as steel fibers and iron powder. Alternatively, using modified asphalt as a binder, pressure-forming is performed in a factory to produce highly stable and wear-resistant asphalt concrete plates, asphalt pro, etc., and these are laid on the foundation. It is also possible to construct a bituminous pavement with extremely superior flow resistance and abrasion resistance compared to conventional pavement by performing frequency heating.

The prefabricated pavement construction method of the present invention has the following excellent features and effects.

(1) For the bonding layer between the base and the prefabricated paving material, use a bonding material such as bituminous material that is different from conventional cement mortar, and at least a portion of it uses heat-generating aggregate, aggregate using filler, or filler. A layer consisting of a mixed mixture, i.e., a mixture layer, is used, and the bonded layer is efficiently internally heated with high frequency.
The bond is made by melting or softening the bonding material.

For the high frequency heating, induction heating, dielectric 7Jl heating, or both can be used. By placing the above-mentioned mixture layer in a high-frequency electromagnetic field without using fuel such as gas or oil, and without using fire, electromagnetic energy can be absorbed into the countless exothermic energy contained inside the mixture layer. It is absorbed by the aggregate, filler, or moisture in the mixture layer, and is heated efficiently and uniformly from the inside using Joule heat, intramolecular friction heat, etc., so the mixture layer can be brought to the desired temperature in a short time. Can be heated.

Since the prefabricated paving material and the base are also heated at the same time, the prefabricated paving material can be firmly bonded to the base via the mixture layer. The mixture layer can be made of a room-temperature mixture, such as a Hirosaki emulsion mixture containing aggregates such as metals and fillers, which has moisture, but is heated from the inside using high-frequency heating to evaporate the moisture and form a heated mixture. By bonding, the mixture layer can be made to have excellent water resistance.

(3) Unlike cement mortar, the mixture layer has flexibility, so it can follow even if the base is flexible or vibrates, and it can also absorb stresses such as loads, vibrations, and shocks. Since it can be relaxed, good bonding can be maintained.

(4) Waterproof pavement can be created using prefabricated paving materials.

(5) By using prefabricated paving materials, highly stable pavement can be constructed easily, quickly, and reliably.

[Brief explanation of the drawing]

In the figures, Fig. 1 is a side view showing an embodiment of the prefabricated pavement construction method applying the high frequency dielectric heating of the present invention, and Fig. 2 is an embodiment of the prefabricated pavement construction method applying the high frequency dielectric heating of the present invention. FIG. In the figure, (1) is the base, (2) is the exothermic bone phase and filler, (3) is the mixture layer containing exothermic aggregate and filler, (4) is the prefabricated paving material, and (5) is the induction Child,(
6) is a high frequency optical '#It machine, (71U high frequency oscillator, (
8) is a high frequency electrode, and (9) is a shield. Patent Applicant Ai 2a@Ge Procedural Amendment 29th year of 1985 Mr. Manabu Shiga, Commissioner of the Patent Office■, Minor Case Indication 1982 Patent Application No. 64336 2, Title of Invention Breno Bu Paving Method Applying High Frequency 3. Relationship with the case of the person making the amendment The entire text of the patent applicant's specification will be amended as shown in the attached sheet. Description 1, Name of the invention Prefabricated pavement construction method applying high frequency 2, Claim 1 Made of a binder such as wood, thermoplastic mixture, etc., and a material, at least a part of which generates heat due to high frequency. A layer made of a mixture using aggregate and filler is provided on the base, and then a pre-bald paving material is laid on the top surface, and the mixture layer is heated and melted or softened by applying high frequency from above. , a pre-bald pavement construction method applying high-frequency heating, characterized in that a pre-bald paving material is bonded to a base via the mixture layer. 2 Preno plastics having a layer at the bottom made of a mixture of a binder such as bituminous material or a thermoplastic mixture, and aggregate and filler, at least a portion of which is made of a material that generates heat due to high frequency waves. A prefabricated pavement that applies high frequency heating, characterized in that a paving material is laid on a base, and the mixture layer is heated, melted or softened by applying high frequency from above, and the prefabricated pavement side is bonded to the base. Construction method. 3. Detailed Description of the Invention The present invention relates to a prefabricated pavement method in which high-frequency heating is applied to pave prefabricated paving materials such as concrete blocks and asphalt blocks, that is, the prefabricated pavement side. Conventionally, when paving prefabricated paving materials on a base such as a concrete slab, in most cases hard-mixed cement mortar is spread with a trowel to a thickness of about 10 to 5 mm, the prefabricated paving materials are laid on top of this, and cement mortar is applied to the joints. A filling method is used. However, when the base is a flexible pavement such as an asphalt pavement, or a base that is subject to deflection due to load or vibration due to load or impact, such as steel deck slabs (for example, road bridges, pedestrian bridges, etc.), it is a rigid body. The cement mortar layer is prone to cracking and peeling, and especially in steel deck slabs, there is a problem in that rainwater seeps through and corrodes the steel plate. However, the seven-ment mortar layer still has some drawbacks, such as shrinkage cranks. Therefore, there is a desire to bond prefabricated paving materials to substrates using flexible viscoelastic materials such as bituminous mixtures, but no suitable construction method has yet been developed. The present invention responds to such demands and provides a new prefabricated paving method for paving prefabricated paving materials using a flexible mixture layer made of bituminous material, thermoplastic mixture, etc. as a bonding layer. It is something to do. That is, the present invention provides a layer made of a mixture of a binder phase such as bituminous paulownia, a thermoplastic mixture, and aggregate and filler, at least a part of which is made of a material that generates heat by high frequency, on a base, Then, after laying the prefabricated paving material on the upper surface, the mixture layer is heated and softened by applying high frequency waves from above, and the prefabricated paving material is bonded to the base via the mixture layer. This relates to a prefabricated pavement construction method that applies high-frequency heating, and also includes binder materials such as bituminous materials and thermoplastic mixtures, and aggregates and fillers that are at least partially made of materials that generate heat due to high-frequency waves. The prefabricated paving material, which has a layer of a mixture at the bottom, is laid on the base, and the mixture layer is heated and softened by applying high frequency waves from above, and the prefabricated paving material is placed on the base. This relates to a prefabricated pavement construction method that applies high-frequency heating, which allows for the above-mentioned bonding. The method of the invention will now be explained by means of illustrated embodiments. FIG. 1 is a side view showing an example of a pre-paving method using high-frequency induction heating. In the figure, (1) is the base. The base (1) is the construction base on which prefabricated paving materials are laid and paved. For example, when paving prefabricated paving materials on the slab of a road bridge or pedestrian bridge, the slab is flush with the base. Ru. When paving prefabricated paving materials on top of asphalt pavement, the pavement surface becomes the base. In addition, when paving prefabricated paving materials on concrete pavement, concrete slabs serve as the base. (2) is an aggregate or filler made of a material that generates heat due to high frequency waves (hereinafter referred to as exothermic aggregate or filler). Exothermic aggregates and fillers (2) are materials that generate heat when placed in a high-frequency electric or magnetic field, and include metals, metal compounds, ores, granules such as slag, fibers, bone tissue, etc., and graphite powder. These include granules, carbon fibers, etc. (3) is a mixture layer containing exothermic aggregate and filler (2) (hereinafter referred to as the mixture layer), and a binder such as bitumen or thermoplastic mixture (hereinafter referred to as binder such as bitumen). )and,
At least a part thereof consists of exothermic aggregate, aggregate consisting of filler (2), and a mixture with filler. The proportion of the exothermic aggregate and filler (2) in the mixture of the mixture layer (3) is usually about 2 to 30% by weight, and even more is acceptable. However, in terms of heat generation effect, 3()% by weight or less is sufficient. The bituminous material, thermoplastic mixture, etc. used as the binder are as follows. Bituminous material is a bituminous material consisting of one or more selected from petroleum asphalt, natural asphalt, tar, pitch, etc., and a combination of these bituminous materials with rubber, synthetic polymer,
There are bituminous materials that are mixed and modified by appropriately adding one or more resins, mineral oils, process oils, plasticizers, etc. Thermoplastic mixtures include thermoplastic polymers, thermoplastic natural resins, synthetic resins and their derivatives, and mixtures of these materials with the appropriate addition of rubber, mineral oil, process oil, plasticizers, fats and oils, etc. etc. This thermoplastic blend can be used in the form of an emulsion or in the form of a solvent-added cutback. (4) refers to the construction of a paving or ζura 1.
Formed paving materials and paving slabs, which are produced in the last 12 months, include concrete blocks, concrete slabs, asphalt blocks, asphalt concrete slabs, stone slabs, stone block blocks, tiles, brick LL, artificial stone slabs, synthetic stone slabs, and ice. Soul blocks etc. (5) is the inductor, and (6) is the high frequency power generation + geometry. First, establish the foundation (1). Next, there is a history i on the top.
′! Spread emulsion etc. to form a prime coat or tack coat. For road bridge decks, a prime coat for adhesion is usually applied by spraying or painting. In addition, if a waterproof layer is provided, it is provided on top of the adhesive prime coat. ” The double prime part, tack coat, etc. may be omitted depending on the case. Next, a mixture layer (3) containing exothermic aggregate and filler (2) is provided on the base (1). Mixture layer (
3) is formed by spreading a mixture containing exothermic aggregate and filler (2) to the required thickness at room temperature or in a heated state, and then rolling it. It can also be formed by laying down a mixture. If necessary, it is formed into a notebook or a plate and the meko mixture layer (3) is fixed in place by nailing or gluing. When using a mixture layer (3) formed into a sheet or plate shape, the surface of which is formed into a pressure-sensitive adhesive and has a release/release layer,
ill +'f [fl Just peel off the sheet and put it on the base (1). In this way, the mixture layer (3) is provided on the base (1), and the prefabricated paving material (4) is laid on top of it. In this case, a tack coat of bituminous emulsion or the like may be provided on the mixture layer ( ), and the pre-paved material (4) may be spread over the mixture layer. Depending on the site conditions, a pre-knob paving material (4) with a layer of mixture (3) on the bottom surface is laid on the base (1). In this case, it is possible to omit previously providing the mixture layer (3) on the substrate (1). Such a prefabricated paved kid (4) is made by combining a mixture layer (3) on the back of the blench and paved material (4) such as concrete blocks (4) at the factory, or prior to the installation of the pavement at the paved site. A mixture layer (3) formed into a sheet or plate may be cut to a certain size and stretched on the back side of the paving material (4). In this case, if the surface of the mixture layer (3) has pressure-sensitive adhesive properties, it will be easier to perform the JU process. Prefabricated paving material (4
), even if a mixture containing exothermic aggregate and filler (2) is placed in the lower layer during molding, part of the aggregate and filler in the entire mixture is exothermic. Prefabricated paving material (2) in which exothermic aggregate and filler (2) are mixed throughout.
4) It can also be used by molding. Next, high frequency waves are applied from above this prefabricated paving material (4). When a high-frequency current is transmitted from the high-frequency generator (6) to the inductor (5), magnetic lines of force, that is, a high-frequency magnetic field are generated, and the action of this magnetic field generates eddy currents in the exothermic aggregate and filler (2), which generates Joule heat. The mixture layer (3) is uniformly heated and melted or softened from the inside to develop a bonding force, allowing the prefabricated paving material (4) to be bonded and integrated with the base (11). The frequency applied to the brake paving material (4)
The temperature is selected depending on the shape and dimensions of the mixture layer (3), the composition of the mixture layer (3), the temperature, etc., but in practical terms 50 K, which is applied to heat treatment of steel,
High frequencies below Hz (kilohertz) are suitable. Figure 2 is a side view showing an example of a prefabricated pavement construction method that applies high-frequency dielectric heating, and is similar to Figure 1.
), on which exothermic aggregate and filler are mixed and a mixture layer (3) is added.
), and after laying a prefabricated paving material (4) on its upper surface, a high frequency voltage from a high frequency oscillator (7) is applied to a high frequency electrode 18) (8). It goes without saying that a flat plate, a grid, etc. should be used as the high-frequency electrode (8), and should be appropriately selected and arranged according to the form of the first mixture layer (3), so that high-frequency waves can be transmitted to the mixture layer (3). Also, if necessary, a white seal 9) may be provided to prevent leakage of radio waves. When a high frequency electric field acts on the mixture layer (3), the mixture layer (3)
Water in the dielectric material (3), particularly bituminous emulsion, rubber latex, etc., generates heat and the mixture layer (3) is heated from within. The prefabricated paving material (4) can thus be bonded and integrated onto the base 1+1) via the mixture layer (3). High-frequency heating from above the prefabricated pavement (4) is performed by induction heating when the mixture layer (3) has not absorbed moisture, such as a heated bituminous mixture, and when it is still a bituminous emulsion or latex mixture, or In addition, dielectric heating is applied when the moisture content of aggregate etc. is high. Furthermore, depending on the situation, both dielectric heating and induction heating can be used in combination to promote heating of the mixture layer. By high-frequency heating, pre-no-bu paving material (4) and base (1)
) The mixture layer (3) interposed between the prefabricated pavement phase (4) and the base (1) is heated and melted or softened more quickly than the inside, exerts a bonding force, and firmly connects the prefabricated pavement phase (4) and the base (1). Prefabricated pavement can be constructed. Furthermore, as an application of the prefabricated pavement construction method of the present invention, it is possible to obtain a pavement similar to ordinary asphalt concrete pavement by using the prefabricated paving material asphalt concrete 1 plate. In addition, by blending the mixtures that make up the asphalt concrete plates and asphalt concrete blocks for prefabricated pavement, for example, steel fiber rules, exothermic aggregates such as iron powder,
Add filler or use modified asphalt as a binder and press-form in a factory to produce highly stable and wear-resistant asphalt concrete plates, asphalt blocks, etc., and then place them on the base. By laying these and applying high frequency, it is possible to construct a bituminous pavement with extremely superior flow resistance and abrasion resistance compared to conventional pavement. The prefabricated pavement construction method of the present invention has the following excellent features and effects. (1) For the bonding layer between the base and the pre-knob paving material, use a mixture layer that uses a binder phase such as bituminous material, which is different from conventional cement mortar, and at least a part of which uses exothermic control and filler, The prefabricated paving material is efficiently heated from the inside using high frequency to melt or soften the binding material, thereby bonding the prefabricated paving material to the base. (2) High-frequency heating does not use gas, kerosene, etc., does not use fire, is simple and easy to work with, and can efficiently form a mixture layer uniformly from the inside in a short time. Through the mixture layer, the prefabricated paving material can be firmly bonded to the base. The mixture layer can be made of a room-temperature mixture, such as a mixture containing exothermic aggregates and fillers, or a bituminous emulsion mixture that contains moisture, by heating from the inside using high-frequency heating to evaporate the moisture, and forming a heated mixture. Since they can be combined, the mixture layer can have excellent water resistance. (3) Unlike cement and mortar, the mixture layer is flexible, so it can follow even if the base is flexible or vibrates.
Since stress such as impact can be absorbed and relaxed, good bonding can be maintained. (4) Waterproof pavement can be created using prefabricated paving materials. (5) By using prefabricated pavement, highly stable pavement can be constructed easily, quickly, and reliably. 4. In the simple explanatory diagrams of the drawings, Fig. 1 is a side view showing one embodiment of the prefabricated pavement construction method applying the high frequency induction heating of the present invention, and Fig. 2 is a side view showing an example of the prefabricated pavement construction method applying the high frequency dielectric heating of the present invention. It is a side view showing one example of a prefabricated pavement construction method. In the figure, (1) is the base, (2) is the exothermic aggregate and filler, (3) is the mixture layer containing exothermic aggregate and filler, (4) is the prefabricated paving material, and (5) is the Inductor, (
6) is a high frequency generator, (force is a high frequency oscillator, (8) is a high frequency electrode, and (9) is a shield.

Claims (1)

[Claims] ■ A layer made of a mixture using a binder such as bituminous powder or a thermoplastic mixture, and aggregate and filler, at least a part of which is made of a material that generates heat by high frequency, on a base. Then, after laying the prefabricated paving material on the top surface, the mixture layer is heated and melted or softened by applying high frequency waves from above, and the prefabricated paving material is placed on the base through the mixture layer. A prefabricated pavement construction method that uses high-frequency heating to create bonds. 2 Prefabricated with a J- at the bottom made of a mixture of a binder such as bituminous material or a thermoplastic mixture, and aggregate and filler, at least a part of which is made of a material that generates phosphorus by high frequency. A prefabricated paving material applying high-frequency heating characterized in that the paving material is laid on a base and high frequency is applied from above to melt or soften the mixture layer, thereby bonding the prefabricated paving material onto the base. Paving method.